1 Monty: To be fair, raiders could have taken the Round Table and all the matching chairs, except this one.
2 Minnesota Jones: The boy has a point. It's the Siege Perilous. Would you take a chair that means instant death to anyone who sits in it?
3 Prof. Jones: Definitely! An artefact like that would be well worth studying! Sitting in, even!
4 Monty: Would anyone normal take a chair that means instant death to anyone who sits in it?

Take this advice to heart. Whenever you steal a table and matching set of chairs, make sure you try sitting in all the chairs first, to see if any of them is a cursed item that will slay anyone who sits in it. You really don't want to find out that sort of thing next time you host a dinner party.